soo my motor blew yesterday, so ive decided that im going to rebuild my motor and im going to get a Large streetport.

it is a 1991 turbo U.S. motor

so my question is what turbo should i use to make atleast 350-400rwhp considering that im going to have a large street port.

list of things im going to get so far.
*rebuild my motor with large street port.
*Going V-mount
*going to be running a Power Fc with commander
*Water/meth injection(should i buy this?)
*upgrade the injectors(what cc should i get?)
*supra fuel pump(or should i go with aeromotive?)

so far those are the things i have planned, i need help and guide lines on how should i approach this.

any feed back would be help full

 

Looks good so far man.

 

*SEARCH

I'd think someone with over 5000 post would know how to use the search TOOL.

-850/1600cc
-GT35R

 

Yes to water/alcohol injection.
If so 550/1600 injector combo.
Anything around 60mm for turbo( To4S/Gt35R etc)
I like RP(rx7.com) fuel pump.

 

oops I was thinking fd....

720/1600cc

 

you don't need 720 primary for that power range, and it complicates idle tuning with the Power FC, which is going to be an issue if you have to pass Cali emissions. just go 550/1680. Supra TT is more than enough pump. I had one with a T04S setup and I ran it at 21psi (race fuel) and never had a problem with running out of fuel. Do yourself a favor and rewire the pump though. I cut out the resistor relay on mine.

water/meth injection is up to you. It adds safety when working correctly but it also adds cost and complexity to your setup, and shouldn't be "necessary" with a good tune and boost under 15-16psi, but you are on Cali **** gas though.

 

ive tried to search, but im still unclear on many things..

and bout the post, the west section does that.





alright, ive talked to a few other members, telling me that the water/alcohol injection is the way to go, .

To4S/Gt35R i gotta look more into that, im still trying to do as much research on this.

rp fuelpumps. ill have to check that out, thanks



sweet thanks for the feed back, its much appriciated. im still a turbo nuub.


and ill try to do a bit more research. thanks

 

well im not too worried bout passing smog/emissions. i have no emissions.

well i mostly plan to make at 360rwhp, enough for track.

so 550/1680 would do the trick? as for the fuel pump, yea i planned to cut the resister. soo the the supra FP would be able to hand that much power range with out cutting out? i really dont plan to boost more than 17psi if i go with a gt35r.

yea i dont mind about the cost, thats the least of my worries. i just dont want to run the risk of antyhing going wrong.

haha yea, cali has some pretty shitty gas, but cant do anything about it.

 

yeah that fuel pump will be fine.
The injection kit is a good thing to have especially for a track car running over 15psi. With a gt35, 60-1 or similar you should be right around the 400 hp area @15 psi. So if your looking for 360 you should hit that easy at a bit lower boost, without requiring the aux injection.

 

SWEET thanks for the feed back..

looks like im going to be on the look out for the injection kit then.,

also decided to get my motor studded as well.

*quick update*

im going to be picking up a T70 this weekend, still going to have to buy a manifold for it(T4) and injectors. so should i get 550/1680 for the injectors?

 

started my rebuild, picked up a t70 turbo.

https://www.rx7club.com/2nd-generation-non-technical-pictures-198/project-scarlett-gtus-turbo-build-400rwhp-800397/

 

dont really need the AI injection for that hp you only need like 14psi to reach that hp.
550/1600 injector combo will get you to 400rwhp at 80% injector duty
your stock pump might be pushing your limit, you can run a supra pump with re-wire mod or run dual pumps if you think you might run higher hp later
GT35 with 1.0AR will get you there to with room to spare
other then that your list will be ok

Tony

 

This is important, reminds me of my dyno, where I had to hot wire the pump to get full voltage.
BTW 720cc primarys idle just fine w/ the power FC, at least mine do anyway.

 

^ I didn't have a whole lot of problems with 720's on mine either, but others have reported some difficulty at least. I think it is going to be dependent on porting. I have a large streetport and the car required a lot of fuel at idle. Therefore negative lag for the primary's was unnecessary and I can still get it to idle in the high 12's AFR which is where I prefer it.

 

sweet, thanks i might go with the 720 primary's. i just finished doing my porting, I have A Large street port now. and have my t70 turbo. i should be picking up my Pfc in the next month or so.

i do plan on getting the supra fuel pump, but i might want to run a sump tank.. i plan on doing some autoX, and time attack..

dont want the car to loose fuel and pop...

im still working on the small details for my build.